Geoserver, Tomcat 7 and JSONP

I came across an issue recently where we were trying to get JSONP enabled for a Geoserver install.  Attempting to turn it on in web.xml was not working and as it turns out is not supported by Geoserver.

To enable JSONP in Tomcat 7:

go into /tomcat/bin

if there is no setenv.sh file create one

insert “export ENABLE_JSONP=true and outFormat=text/javascript” without quotes

save the file and restart Tomcat